Watson-Marlow 114DV pumphead: operating instructions 5
To change from the large
tube to the small tube setting
Press down and slightly away from the front of
the pumphead, as shown in the first picture
above.
Maintain the angled downward pressure and
push away from the front of the pumphead.
The jaw clicks into a new position.
Release the pressure. The jaw rises into its
correct alignment. If it does not rise, repeat the
procedure, being sure to maintain downward
pressure until release.
Adjust the tube holder on the other side of the
pumphead in the same way.
To change from the small
tube to the large tube setting
Carry out the procedure described above, but
pushing towards the front of the pumphead.
Lift the flip top until fully open.
Place the pointed device pointing down into the
small depression pictured here.
Note: The pictures on the previous page show the
tube holders’ correct positions for small and large
tubing. If a tube holder is not vertical relative to the
body of the pumphead, it is wrongly positioned.
Follow the instructions above to reposition it.
3.5.1 Tube holder
repositioning
Switch off the pump before changing the tube
holder position. Use a pointed device such as a
ball-point pen to reposition the lower tube holders
on both sides of the pumphead.
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